If you are searching for a Korean fried chicken sandwich in Fullerton, ours is on the menu board as the K-Chicken Sandwich. Same thing, shorter name: crispy chicken in spicy gangjung sauce with pickles on a soft brioche bun, $5.99 in store, and available at the drive-thru window.
Korean fried chicken, in sandwich form
Korean fried chicken usually arrives as a shared event. A whole bird cut into pieces, or a tray of wings, set in the middle of a table with pickled radish and a pile of napkins, eaten slowly with other people over an hour. That is the format the category was built around and it is a genuinely great way to spend an evening.
It is also completely useless at one in the afternoon when you have thirty minutes.
The sandwich is the answer to that problem. Same flavor language, different delivery. The chicken is fried until the coating goes hard and glassy rather than soft and bready, then it gets sauced, then it goes in a bun with something acidic to keep the sweetness from running away. You eat it in one hand. You do not need a table or company or an hour.
Our version is the one part of the menu where the naming confuses people, so to be explicit: the K-Chicken Sandwich and the K-Chicken Deluxe Sandwich are Korean fried chicken sandwiches. The K is doing the same work it does in K-pop and K-beauty. We shortened the name for the menu board, not because it is a different food.
What gangjung sauce is
Gangjung is the Korean word for a fried item that is finished in a glaze rather than served bare, and it is the reason Korean fried chicken tastes the way it does. The chicken gets fried first and sauced second, so the coating goes into the sauce already crisp and comes out glossy.
The flavor direction is sweet heat. Chili does the front end, sugar rounds it off, garlic and a soy savoriness sit underneath. It is not the vinegar and cayenne heat of Nashville hot chicken, and it is not the smoky sweetness of American barbecue sauce. It is sticky, bright, and it builds gradually rather than arriving all at once.
On our sandwich the gangjung sauce is listed as spicy, and it is, but it is a level of spicy built for a lunch rush rather than for a dare. The pickles are there to keep it in check. If chili genuinely does not work for you, the bulgogi side of the menu has no heat in it at all.
Sandwich or Deluxe
Two versions, fifty cents apart. The base sandwich is the purist build: chicken, sauce, pickles, bun, nothing competing. The Deluxe adds cheese and lettuce, which softens the heat and turns it into a fuller meal.
| Item | In store price | Calories | Combo | What is on it |
|---|---|---|---|---|
| K-Chicken Sandwich | $5.99 | 710 | $11.77 | Crispy chicken, spicy gangjung sauce, pickles, soft brioche bun |
| K-Chicken Deluxe Sandwich | $6.49 | 830 | $12.27 | Crispy chicken, cheese, lettuce, pickles, spicy gangjung sauce, soft brioche bun |
2,000 calories a day is used for general nutrition advice, but calorie needs vary. Additional nutrition information available upon request. All prices on this page are our in-store prices, and a combo adds French Fries and a soft drink.
Which one to pick is a question about heat tolerance more than appetite. Cheese blunts chili. If you want the sauce front and center, order the base sandwich. If you are bringing someone who is nervous about Korean spice, the Deluxe is the gentler introduction and the lettuce adds a cold crunch against the hot chicken.
What each part is doing
A fried chicken sandwich has four components and each one has a job. It is worth knowing what they are, because it explains why swapping any of them changes the whole sandwich.
- The chicken. Fried to a hard shell rather than a soft crust, which is what lets it survive being sauced. A soft coating turns to paste under a glaze.
- The gangjung sauce. Sweet heat, applied after the fry so the crust stays audible.
- The pickles. Acid, and the only acid in the sandwich. Without them the sweetness has nothing pushing back and the last few bites go flat.
- The brioche bun. Soft and slightly sweet, and deliberately unaggressive. A hard crusted roll would fight the chicken for attention and a seeded bun would add a flavor nobody asked for.
The version of this sandwich that goes wrong in most kitchens goes wrong at the acid. Everything else is easy to get right and hard to notice.
There is a timing element too, and it is worth knowing if you are ordering for a group. A sauced fried chicken sandwich is at its best in the first few minutes, while the coating is still loud under the glaze. Stacked in a bag with three other orders it stays good, but the crust softens a little as it steams. If you are picking up for the office, ask for the sandwiches to go in last, and open the bag when you get there rather than letting them sit.
Korean fried chicken around Fullerton, and where we fit
Fullerton has a real Korean fried chicken scene, and we are not pretending otherwise. Holdaak, I Got My Sound Chicken, J’s Korean Cuisine and BB.Q Chicken are all a short drive from us. If what you want is a whole bird, a tray to share and a table to spread it across, those kitchens do that properly and you should go.
What we are is the fast version. A drive-thru window on a Tuesday afternoon is not how the category usually works, and that is the gap our sandwich sits in. We are not the destination dinner. We are the one you can get without parking, on a lunch break, with fries.
That is a narrower claim than being the best Korean fried chicken in Orange County, and it is one we can actually keep.
Order it with fries you shake
The pairing we would push you toward is the Shake It Fries at $3.79. They arrive in a paper bag with a packet of onion or cheese seasoning, and you shake the bag yourself before opening it. Cheese powder against a sweet and spicy chicken sandwich is the pairing we would put money on, salt and dairy landing exactly where the chili leaves off. The Shake It Nugget at $3.99 works the same way if you would rather have chicken with your chicken.
Or take the combo. The K-Chicken Sandwich combo at $11.77 gets you the sandwich, French Fries and a soft drink in one order, and the Deluxe combo is $12.27. Between 11:30am and 2pm on weekdays there is also a Lunch Special running on the shrimp side of the board, at $9.99 for a Shrimp Combo, which is worth knowing about if you are feeding two people with different opinions.
“I got the shrimp burger and chicken burger, and they were packed with toppings and so delicious. Definitely want to come back!”
Bomie A., Google, Jul 2026
We are at 150 W Orangethorpe Ave in Fullerton, open 10am to 10pm every day, with drive-thru, dine in and take out. The item pages are K-Chicken Sandwich and K-Chicken Deluxe Sandwich, and you can start an order on the ordering page.
Questions
What is gangjung sauce?
Gangjung is the Korean term for a fried item finished in a glaze rather than served plain. The sauce is sweet heat: chili up front, sugar rounding it out, with garlic and soy savoriness underneath. Because the chicken is fried first and sauced second, the coating stays crisp under the glaze instead of going soft.
How is Korean fried chicken different from regular fried chicken?
The coating is thinner and harder, closer to glass than to bread, so it stays crisp after sauce is added. American fried chicken is usually seasoned in the flour and served dry. Korean fried chicken is typically fried plain, then finished in a glaze such as gangjung or soy garlic after it leaves the fryer.
Is the K-Chicken Sandwich spicy?
It is listed as spicy and the gangjung sauce does carry chili heat, but it is calibrated for everyday eating rather than as a challenge. The heat builds gently and the pickles cut it. If you want it milder, the Deluxe adds cheese and lettuce, which soften the chili noticeably.
What is the difference between the K-Chicken Sandwich and the Deluxe?
The Deluxe adds cheese and lettuce to the same crispy chicken, gangjung sauce, pickles and brioche bun. It is $6.49 against $5.99, and 830 calories against 710. The cheese blunts the heat and the lettuce adds crunch, so the Deluxe eats milder and fuller than the base sandwich.
Can I get a Korean fried chicken sandwich at a drive-thru in Fullerton?
Yes. LOTTERIA Fullerton serves the K-Chicken Sandwich and the K-Chicken Deluxe Sandwich through its drive-thru window at 150 W Orangethorpe Ave, open 10am to 10pm every day. Dine in, take out, pickup and delivery are also available, and both sandwiches are on the regular menu rather than a limited run.